Visible crew/equipment: In the scene where John, Sarah, and The Terminator are in the Cyberdyne building. They have just come down in the lift into the lobby where the SWAT team are waiting and firing gas cylinders. Arnie says his "I'll be back" and walks out of the lift. The SWAT team issue various instructions, then say "OK - drop him!". Now - look carefully. The second they start to fire, look at the SWAT member who is furthest to the left and standing up. If you look right by his shoulder as soon as they start firing, what looks like a crew member walks into the scene, with his hands in his pockets. (01:58:51)
Visible crew/equipment: In the scene where the Terminator is stood at the broken window of the Cyberdyne building, just after he has shot the police cars with the Gatling gun, he uses a grenade launcher to fire a grenade through the side window of a police car below. Look carefully and you will see a rectangular package, presumably a small charge fitted by the special effects team, on this side window exactly where the window smashes to simulate the grenade smashing the glass a split second before exploding inside the car. (01:48:30)
Visible crew/equipment: [Special Edition only] Shortly after the Terminator shoots up the police cars outside Cyberdyne, the SWAT team enters the building through the front glass doors. When the shot changes from outside the building to inside, the camera dolly and cameraman are visible in the reflection on the glass doors and windows. (01:54:30)
Visible crew/equipment: After the tow truck plunges into the canal and John takes off on his bike, there's a shot starting low on the truck and craning up to windshield-level. You can see a reflection in the truck's paint job, next to the grille, of a large light and a crewmember. (00:34:05)
Visible crew/equipment: In the escape from the hospital where the car is driving fast in reverse, the stunt driver's head is visible sticking up from inside the trunk driving the car from the back. It's too far back to be John Connor's head. (01:02:05)
Visible crew/equipment: When the T-1000 is chasing John on his motorbike aboard the truck, as it is going to hit two cars in the traffic you can see in the shot from the truck's side the camera car used for the frontal shot on the background, and simultaneously, as the camera changes angle, you can see a camera protected in the box attached on the side of the truck used for the previous shot.
Visible crew/equipment: In the scene immediately after the Truck vs Harley vs Dirtbike chase where John Connor demands that the T-800 pull over for a "time out", as they pull to a stop and start to have a conversation the boom mike is visible reflected in the shiny black mudguard of the Harley's front wheel moving back and forth between the actors as they say their lines. (00:39:10)
Visible crew/equipment: In the Cyberdyne lobby when the Terminator walks towards the SWAT team, you can see unexploded squibs (pyrotechnics) in the wall behind him to his left (before the shooting starts). (01:58:40)
Visible crew/equipment: Camera lights are reflected in the glass door in the shot behind Dyson as Sarah Connor laser-scopes him. (01:36:00)
Visible crew/equipment: When Arnie is airborne on his cycle in the canal scene, you can faintly see the wires holding up his bike - from just around his shoulders right before he lands to until it switches scenes. (00:37:15)
Visible crew/equipment: When the Terminator is catapulted into the factory by the tanker truck, wires are visible holding him up (Slow-mo or pause might help.). (01:52:50)
Visible crew/equipment: When Sarah opens the car's door at the gas station a man is reflected on the window who shouldn't be there.
Visible crew/equipment: After the T-1000, disguised as Janelle, impales Todd, it hangs up the phone and pulls the blade out of Todd's head. As he slumps forward away from the cupboard and drops out of frame, you can see the retracting-blade rig that was attached to the right side of his head, creating the illusion that the blade was pulled through his head. Frame-by-frame helps on this one - it's visible for the last 3 frames before he disappears, just past his chin. (00:41:25)
Visible crew/equipment: A camera and the lower half of the crew are reflected in the T-1000's sunglasses as it cruises through the fires in front of the Cyberdyne Building. (01:58:05)
Suggested correction: Checked for this many times and have never spotted what was described here. Perhaps a screenshot would help.
Visible crew/equipment: After the SWAT team flee the Cyberdyne office once they realise it's going to blow, the Terminator, Sarah and John get inside an elevator. When the door closes, the camera can be seen reflected on it. (01:57:30)
Visible crew/equipment: When the Terminator looks back and fires his shotgun at the truck's tire, on the far right side we can see part of an orange cable or pole with rigging attached to the back of the motorcycle. (00:37:40)
Visible crew/equipment: When the T-1000 is chasing John, the terminator, and Sarah in the cop car, the terminator backs the cop car off the ramp, making the car bounce around. At the very end of this shot, you can see crew members, light equipment, and camera dollies put off to the side.
Visible crew/equipment: When The Terminator exits the bar, a bartender then points a 30-30 at him. The Terminator then takes the 30-30 off him and takes a pair of sunglasses out of his shirt pocket. A reflector screen is visible in the reflection of the glasses when he puts them on. (00:10:10)
Visible crew/equipment: Juat after Sarah gets a visit from Reese, she runs down a corridor and ends up outside. If you look carefully at the bottom left as the door opens, there's a guy's arms visible, making sure the door doesn't open too far. (00:21:30)
Visible crew/equipment: Right before the big explosion goes off at Cyberdyne, Arnie, John, and Sarah get in an elevator. The camera comes close to the doors as they close, causing it to be reflected in the metal.